218075196853 has 2 divisors, whose sum is σ = 218075196854. Its totient is φ = 218075196852.

The previous prime is 218075196793. The next prime is 218075196947. The reversal of 218075196853 is 358691570812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216111554884 + 1963641969 = 464878^2 + 44313^2 .

It is a cyclic number.

It is not a de Polignac number, because 218075196853 - 2¹⁷ = 218075065781 is a prime.

It is a super-2 number, since 2×218075196853² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 218075196794 and 218075196803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218075196953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109037598426 + 109037598427.

It is an arithmetic number, because the mean of its divisors is an integer number (109037598427).

Almost surely, 2^218075196853 is an apocalyptic number.

It is an amenable number.

218075196853 is a deficient number, since it is larger than the sum of its proper divisors (1).

218075196853 is an equidigital number, since it uses as much as digits as its factorization.

218075196853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 218075196853 in words is "two hundred eighteen billion, seventy-five million, one hundred ninety-six thousand, eight hundred fifty-three".